It may be helpful to watch Justin Rhodes videos on YT - very calm and respectful process either using a cone or string up without a cone and slitting jugular - you may need to sign up your email with him to see the actual entire process videos on his own site since YT frowns on any kind of animal harvesting. I would use a cone as the wing flapping is minimized - you might want secure (tie or bungee) legs even if using cone just in case there is kicking. You don't want to get scratched in the eyes or face yourself especially if you are doing this for first without help. You can use a traffic cone or a specialized metal cone nailed up to wall.